How to whiten stained teeth
Whitening stained teeth starts with identifying whether the discoloration is surface stain or a change within the tooth.
The short answer
Use a dental examination to identify the stain, then choose cleaning, peroxide whitening, or treatment of the tooth according to its cause.
What can cause surface and internal tooth discolouration?
Surface stains come from pigments, plaque, or calculus, while internal discoloration can follow trauma, decay, fluorosis, or dentin changes. Restorations do not bleach like natural teeth.
What can you do to remove deposits from stained teeth?
Brush with fluoride toothpaste, clean between teeth, and have calculus professionally removed. Use whitening only as directed after disease has been excluded.
Which changes in a stained tooth need prompt dental care?
Seek care for one tooth that suddenly darkens, pain, a hole, swelling, or bleeding gums before whitening.
What should you ask about stains, cleaning and restorations?
Ask whether the stain is external or internal, whether cleaning is enough, and how restorations will match after whitening.
Frequently asked questions
Can brushing remove every stain?
No. Calculus and internal discoloration need professional assessment.
Why is one tooth darker?
It may have pulp injury, decay, or a restoration and should be examined.
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Who wrote this page
This library is published by Dental Nation, a licensed dental group practising in the United Arab Emirates. Pages are written and overseen by the same clinical team that treats patients in our clinics, and are held to a fixed editorial standard for safety and accuracy.
This page is patient education, not medical advice, and cannot replace an examination. Anything urgent — facial swelling, trauma, uncontrolled bleeding or severe pain — needs a dentist or emergency care now.